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L2646

Sigma-Aldrich

Lectin from Phaseolus vulgaris (red kidney bean)

Phytohemagglutinin PHA-M, lyophilized powder

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Synonym(s):
Phaseolus vulgaris agglutinin, PHA
EC Number:
232-718-7
UNSPSC Code:
12352202
NACRES:
NA.32

Quality Level

300

form

lyophilized powder

potency

<40 μg per mL agglutination activity

composition

Protein, 50-70% biuret

impurities

salt, free

storage temp.

2-8°C

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Biochem/physiol Actions

PHA consists of two molecular species, an erythroagglutinin (PHA-E) which has low mitogenic activity and high erythroagglutinin activity, and leucoagglutinin (PHA-L) which has high mitogenic and leucoagglutinating activity, but very low erythroagglutinating activity.
PHA-E is not blood group specific, but agglutination can be inhibited by certain oligosaccharides. PHA-P is the protein form of PHA prior to separation and purification of erythroagglutinin and leucoagglutinin. PHA-M is the mucoprotein form. Conjugates are prepared from the corresponding purified lectins.

Analysis Note

Agglutination activity is expressed in μg/mL and is determined from serial dilutions of a 1 mg/mL solution. This activity is the lowest concentration to agglutinate a 2% suspension of human erythrocytes in phosphate buffered saline, pH 6.8, after 1 hr incubation at 25 °C.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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